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CVE-2026-111690— Simple Admin Core through 1.8.7 Hard-Coded JWT Secret Authentication Bypass

Quick assessment

Affected
suyuan32 simple-admin-core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Simple Admin Core 1.8.7 及以下版本存在认证绕过漏洞。未认证的攻击者可利用 中硬编码的 ，伪造超级管理员令牌。攻击者可使用该公开密钥对 JWT 进行签名，并设置 声明为 ，从而获得对系统用户、角色、菜单、API 权限、配置及令牌的完全管理控制权。

CVSS 9.8 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
suyuan32 simple-admin-core ≤ 1.8.7 affected
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I. Basic Information for CVE-2026-111690

Vulnerability Information
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Vulnerability Title
Simple Admin Core through 1.8.7 Hard-Coded JWT Secret Authentication Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Simple Admin Core through 1.8.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge super administrator tokens by using the hard-coded Auth.AccessSecret in api/etc/core.yaml. Attackers can sign a JWT with the public secret and roleId claim 001 to gain full administrative control over users, roles, menus, API authorities, configuration and tokens.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
suyuan32 simple-admin-core 0 ~ 1.8.7 -

II. Public POCs for CVE-2026-111690

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111690

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Patches & Fixes for CVE-2026-111690 (1)

Vendor Advisories for CVE-2026-111690 (1)

Security Blog Posts for CVE-2026-111690 (1)

Other References for CVE-2026-111690 (1)

IV. Related Vulnerabilities

Same weakness: CWE-321

V. Comments for CVE-2026-111690

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